Granted Patent
Utility
US 5,159,595 · App. 07/286,713
Ring transmission system
Inventors:
Thomas P. Flanagan, James Angus McEachern, David J. Nicholson, Dino Cosimo DiPerna, Richard Romagnino, Wayne Ergle
Patented Case
View Patent ↗
Granted: Oct 27, 1992
Filed: Dec 20, 1988
Inventors
Thomas P. Flanagan
James Angus McEachern
David J. Nicholson
Dino Cosimo DiPerna
Richard Romagnino
Wayne Ergle
Assignee (at issue)
Nortel Networks Limited
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.